SOLUTION: Please help solve the following probability question. The following mark distribution was extracted from a report prepared by the examiner for Statistics in 2014 for 382 student

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Question 1082431: Please help solve the following probability question.
The following mark distribution was extracted from a report prepared by the examiner for Statistics in 2014 for 382 students who wrote the exam.
Marks (%) Number of students
10 - 20 30
20 - 30 45
30 - 40 85
40 - 50 92
50 - 60 80
60 - 70 40
70 - 80 8
80 - 90 2
Plot a percentage cumulative distribution curve (less than ogive curve) for student marks.

Answer by Fombitz(32388) About Me  (Show Source):